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Product Detailed Parameters
- Description：IC OCT D TRANSP LATCH 3ST 20SO
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：-
- Circuit：-
- Output Type：-
- Voltage - Supply：-
- Independent Circuits：-
- Delay Time - Propagation：-
- Current - Output High, Low：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The SN74AS373NS is an octal D-type transparent latch manufactured by Texas Instruments, belonging to the 74AS logic series. It features eight independent D-type latches with three-state outputs in a 20-pin PDIP package. The device operates within a supply voltage range of 4.5V to 5.5V and supports a propagation delay of 6ns. Output drive capabilities include 15mA high-level and 48mA low-level currents. It functions within a commercial temperature range of 0°C to 70°C.
Feature Summary
- Provides transparent latch functionality for eight independent data channels
- Features three-state outputs for effective bus driving applications
- Delivers high-speed performance characteristic of the AS logic family
Applications
- Parallel-to-serial data conversion circuits
- Bus-oriented memory register implementations
- Temporary storage of digital signals in processing systems
Procurement Notes
Verify the specific suffix 'N' confirms the 20-pin PDIP through-hole package configuration. Confirm RoHS compliance status as indicated in current manufacturer documentation. Ensure the component meets the required operating temperature range for the intended application environment before finalizing procurement decisions.
Selection Notes
Select this component when high-speed latching with significant drive capability is required. The AS series offers faster switching speeds compared to standard or LS variants. Consider the PDIP package constraints if surface mount alternatives are not suitable for the design layout requirements.
Part Context
This part belongs to the Texas Instruments 74AS (Advanced Schottky) logic family, known for superior speed-performance-power product characteristics. The SN74AS373NS serves as a parallel input, serial output compatible latch, distinct from flip-flop variants like the SN74AS374 which utilize edge-triggering mechanisms instead of level-sensitive transparency.
Replacement Considerations
SN74AS373DWR (SOIC package variant)
FAQ
What is the difference between the SN74AS373NS and SN74AS374NS?
The SN74AS373NS is a level-sensitive transparent latch, whereas the SN74AS374NS is a positive-edge-triggered D-type flip-flop.
Does the SN74AS373NS support bidirectional data flow?
No, the device provides unidirectional data transfer from inputs to outputs via the three-state control mechanism.
